[img]https://brickinsights.com/index.php/crop/teaser_compact/sets/8869-1.jpg[/img] 
[url="https://brickinsights.com/index.php/sets/8869-1"][b]8869-1 Polarity Switch[/b][/url] 81 / 100  
[url="https://www.amazon.com/LEGO-Functions-Power-Control-Switch/dp/B003HJM0K4?SubscriptionId=AKIAIGQAU2PVYTRCS5MQ&tag=brickinsights-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B003HJM0K4"][/url] 94 / 100  
[url="http://click.linksynergy.com/deeplink?id=TZZm7nNaZzs&mid=13923&murl=https%3A%2F%2Fwww.lego.com%2Fen-US%2Fproduct%2F8869"][/url] 90 / 100  
[url="http://guide.lugnet.com/set/8869"][/url] 60 / 100  
[url="https://brickset.com/reviews/set-8869-1"][/url]